Fluorescence emission material and organic light-emitting device prepared from fluorescence emission material

A fluorescent emission and furan technology, applied in the direction of luminescent materials, electric solid devices, electrical components, etc., can solve the problems of limited blue fluorescent materials and restricting the development of industrial applications

Active Publication Date: 2020-10-27
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-efficiency blue fluorescent materials are very limited,

Method used

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  • Fluorescence emission material and organic light-emitting device prepared from fluorescence emission material
  • Fluorescence emission material and organic light-emitting device prepared from fluorescence emission material
  • Fluorescence emission material and organic light-emitting device prepared from fluorescence emission material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0061] Synthesis of compound (21)

[0062]

[0063] Synthesis of 5-phenyl-2,3-furandione (M2)

[0064] Dissolve 12g of acetophenone in 150ml of THF, then slowly add 105 mmol of lithium diisopropylamide dropwise at 0°C, stir at 0°C for 30 minutes after the dropwise addition, and then slowly add 15ml of trimethylchlorosilane dropwise, React overnight at room temperature. THF was evaporated after the end of the thin-layer chromatography tracking reaction, then anhydrous hexane was added, filtered, and the filtrate was directly used for the next reaction after further solvent removal.

[0065] The above-prepared intermediate was dissolved in 40 ml of anhydrous ether, and 8.8 ml of oxalyl chloride was slowly added dropwise at room temperature, followed by stirring overnight. After the TLC plate detection reaction was completed, the solid crude product was obtained by direct filtration. The crude product was dissolved in dichloromethane and recrystallized to obtain 6.2 g of M2...

Embodiment II

[0071] Embodiment II: the chemical synthesis of compound (22):

[0072] The following figure shows the compound synthesis scheme of compound (22):

[0073]

[0074] (1) Pd(PPh 3 ) 4 , K 2 CO 3 , 1, 4-dioxane: H 2 O=4:1, refluxed; (2) NH 2 OH.HCl, pyridine, ethanol, refluxed; (3) SnCl 2 , contraratedHCl, EtOH, 70°C; (4) acetic acid, refluxed; (5) PPA, 140°C

[0075] Synthesis of 3,6-bis(4-isopropylphenyl)-phenanthrene-9,10-dione (intermediate M4)

[0076] In a dry three-necked flask, replace the air with nitrogen, add 2.2 g of intermediate 2,7-dibromo-9.10-phenanthrene dione, 2.5 g of 4-isopropylphenylboronic acid, 4.46 g of potassium carbonate, and dioxane: Mixed solvent (150ml) of water (1:4), evacuate air for 15 minutes, replace nitrogen, and finally add 0.278 g of tetrakis(triphenyl)phosphine palladium. Heat to reflux and react for two days. After the reaction is detected by TCL, add 100ml of water to the reaction system, and filter to obtain a solid. The obtai...

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PUM

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Abstract

The invention discloses a fluorescence emission material and an organic light-emitting device prepared from the fluorescence emission material. A thiophene/furan [2, 3-b] quinoxaline and tricyclic aromatic hydrocarbon fused high-efficiency blue fluorescence and other color light-emitting materials are constructed through molecular design. The luminescent wavelength of the material can be regulatedto 426nm and 457nm, and the absolute fluorescence quantum yield reaches 65% and 82% respectively. The material can provide beneficial supplement for commercial blue light materials.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescent materials, and in particular relates to a fluorescent emitting material and an organic electroluminescent device prepared therefrom. Background technique [0002] Organic light-emitting diode (OLED) has many advantages such as active light emission, ultra-thin, flexible light emission, etc., making it the most promising new information display technology and lighting technology after liquid crystal display. The luminescent material determines the luminous color, efficiency and working life of the device, and is the core basis of OLED material and device research. After more than 20 years of development, organic electroluminescent materials have experienced fluorescent materials, phosphorescent materials and thermally activated delayed fluorescent materials. [0003] Phosphorescent materials can use 100% of the excitons generated in the device, and its development has strongly p...

Claims

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Application Information

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IPC IPC(8): C07D491/048C07D491/22C09K11/06H01L51/50H01L51/54
CPCC07D491/048C07D491/22C09K11/06C09K2211/1048C09K2211/1029C09K2211/1088C09K2211/1092C09K2211/1077H10K85/654H10K85/6576H10K85/657H10K85/6572H10K85/6574H10K50/11
Inventor 王栋东李毅祥汪新叶
Owner XI AN JIAOTONG UNIV
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